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Antioxidant and cytotoxic flavonoids from the flowers of Melastoma malabathricum L.

Phytochemical and bioactivity studies of the flowers of Melastoma malabathricum L. (Melastomataceae) have been carried out. The ethyl acetate extract yielded three compounds, identified as naringenin, kaempferol and kaempferol-3- O - d -glucoside, and methanol extract gave kaempferol-3- O -(2,6-di- O - p - trans -couma...

Antimicrobial activity and essential oils of Curcuma aeruginosa, Curcuma mangga, and Zingiber cassumu

Objective To analyze the chemical composition of the essential oils of Curcuma aeruginosa ( C. aeruginosa ), Curcuma mangga ( C. mangga ), and Zingiber cassumunar ( Z. cassumunar ), and study their antimicrobial activity. Methods Essential oils obtained by steam distillation were analyzed by gas chromatography-mass spe...

In vitro antimicrobial activity of mangrove plant Sonneratia alba

Objective To investigate the antimicrobial property of mangrove plant Sonneratia alba ( S. alba ). Methods The antimicrobial activity was evaluated using disc diffusion and microdilution methods against six microorganisms. Soxhlet apparatus was used for extraction with a series of solvents, n -hexane, ethyl acetate and...

Antimicrobial activity of mangrove plant (Lumnitzera littorea)

Objective To investigate the antimicrobial activities of n -hexane, ethyl acetate and methanol extracts of the leaves of Lumnitzera littorea ( L. littorea ) against six human pathogenic microbes. Methods The antimicrobial activity was evaluated using disc diffusion and microdilution methods. Results The antimicrobial a...

Antifungal and Antibacterial Activities of Four Malaysian Sponge Species (Petrosiidae)Activité antif

Aqueous and organic extracts from four marine sponges collected from the coastline of Malaysia were screened against six microorganisms , including the bacteria Staphylococcus aureus ATCC25923, Bacillus cereus ATCC11778, Pseudomonas aeruginosa ATCC27853, Escherichia coli ATCC35218, the yeasts Candida albicans ATCC10231...